| AC adapter Pin | Pin Name | Description |
| 1 | +5 VDC | PC USB Pin 1 (+5 VDC) |
| 2 | USB Data | not connected |
| 3 | USB Data | not connected |
| x | +3.3 VDC | |
| 4 | GND | PC USB Pin 4 (GND) |
Did some testing on my Creative wall charger after wondering why my MicroPhoto would not charge off of a "standard" car USB charger. Found that mystery pin X carries +3.3 VDC, likely as a trigger for the player to charge if it is not seeing PC USB data on pins 2 and 3. Awaiting parts to try building my own cable for further testing.